🚀 go-pugleaf

In article <1d7g9m3.10kb133i8dz0sN@p57.nas1.is2.u-net.net>,
real-address-in-sig@rhu.barb.foobar (Rebecca and Rowland) wrote:

>David Byram-Wigfield <byram@removethis.cappella.demon.co.uk> wrote:
>
>> Paul St George <paul@minument.demon.co.uk> wrote:
>> 
>> > Can anybody help me?
>> > 
>> > I want to use a switch to do the same job as any one key on a Mac
>> > Keyboard. What do I need to make or buy to put between this switch and
>> > the keyboard or between the switch and the computer?
>> 
>> I wouldn't recommend direct keyboard or mouse wiring as back voltage
>> surges may fry your Mac via the ASB port.
>
>I very much doubt that - how could this happen?  If you're not
>connecting a capacitive or inductive load, you shouldn't have any
>trouble with voltage surges, and even if you *do* get voltage surges,
>they'd be unlikely to fry anything except your mouse or keyboard.
>
>> The old 32k BBCB computers frequently controlled external mechanicals via
>> the RS serial port using a tiny BASIC recipe and an *FX command.
>
>Really?  I would have thought that using one of the two parallel ports
>or the A->D port (which has two switch inputs as well as the two A->D
>inputs) would have been much more sensible.  It's what I always did.
>The parallel ports are more suited to this sort of thing too.
>
>[snip]
>
>Rowland.
>


You are probably right, Rowland. 
At this distance, I mix my parallels and serials, although I thought it
was something called RS 249 or some such.

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